Shock-absorber.



J. M. LANSDBN, JR. SHOCK' ABSORBER.

APPLIOATON FILED JUNE 23, 1910.

1,966,738. Patented July 8,1913.

\ 2 SHEETS-SHEET l.

IN VEN TOH J. M. LANSDEN, JR. SHOCK ABSORBER.

APPLICATION FILED JUNE 23. 1910.

1,066,738, 'Patented July 8,1913.

Figi- W/TNESSES: /NVENTOH Wy; wg

gwdg@ g,

rra sfra'rs Panni FEIS.

JOHN N. LANSDENIJR., or NEW YORK, N. Y., AssiGNoR, Br MESNE .flissrcfNMnN'rs To THE ams'ros COMPANY, a CORPORATION or DELawAnn.

SHOCK-Answering.

To all whom it may concern Be it known that I, JOHN M.' LANsDEN, Jr., a citizen of the United States, residing at New York, in the county of 'New York and State of'New York, have invented certain new and useful improvements in Shock- Absorbers, of which the' following is a full, clear, and exact description, such, as will enable others skilled in the art to which it appertains tomake and use the same.

This inventionfrelates to the mounting of vehicle bodies.

One of the vobjects thereof is to provide a simple and effective means for preventing excessive swaying or bounding of vehicle bodies.

Another object adapted to effectively reduce the shock due .to the sudden compression of vehicle springs when passing over any lconsiderable inequality in the road and to more especiallyl relieve against the .intense recoil of thev springs after such compression.

Another object is to provide means of theV above type of cheap and durable lconstruction and reliable action.

Other objects will 'be in part obvious and in part. pointed out hereinafter. l

The invention accordingly consists in the features of construction, combinations lof elements and arrangement of vparts which will be exemplilied in the construction hereinafter set forth, and the scope of the application of which will be indicated in the following claims.` Y

'in the accompanying drawings wherein is shown the preferred embodiment of this invention, Figure 1 is a side ,elevation Aof the device in operative'position upon the vehicle body. Fig. 2 .is an enlarged view of the same, parts being bro-ken away.. Fig. 3 is a cross section taken onlline of Fig. 2. Fig. Il is a side view of one of the cam membersshowing the disposition and form of the cam surfaces. Fig. 5 is an edge view of the member shown in Fig. 4.. Fig. 6 is a cross' section taken on line :ty-y of Fig. 4. Fig. 'i' is a diagrammatic View shoe-'ing the way the edges of the cam surfaces would ap-V pear if said `edges were straightened out in a single plane.

Similar reference characters refer .to similar parts throughout thel several views of the drawings. A

In order that ceitain'fe; tures of this in- Sp'ecication of Letters Patent.

is to provide means.

may be noted that in connectionwithapparaltus of the general natnre -off.that with which this invention deals,I .if itvbe; attempted to employ earn members having projections designed to effectively control. the action of the vehicle springs when said. springs. are compressed by the violentdeseent-fof.the vehicle body thereupon, willy-ricain a-satisfactory manner, provide ,againststhe .sdde'n and intense upheavaloffthe ,veliicle-ibody caused bythe recoil of the springs-.f Ithas been found in practice thatthis\reeoilcauses the vehicle body to lift above its normal po*- sit-ion with respect to the. axle, approximately .one-half the distanceeitf hasyprevi-- quently, as the two motions describedare car to a considerably greater, extent Vvthan. the downward movement and thel eiects'gthereof upon the spring gear' ofl the vehicleare also* more harmful. posed, among other aims, to provide means adapted to effectively remedy this evil by substantially doubling the -reta rding. effect of the device during the upward. li-ftofthe body above its normal position@` l Referring now to theV accompanyng drawings, there is sh-own in iFig-l aportion.

ed the body, diagrammatically,indicatediat. 2. Connected with the barflis tl-iesprng herein shown as of thelsemielliptiotype,v mounted upon the axle 4 and-secured: thereto by means of the clips 5. -Pivotally secured to one of said clips, as by means of a bolt 6, is one of a pair o'f coactingcamniembers f7, `which members are similarly formed, each comprising a circular disk-like portion or '1 plate- S, from which projects, upon one sidethereof, an arm 9 provided at its outer extremity with a h ole or aperture 10 throughl which the bolts (land il are adapted to pass.` These cam plates 8. with their integral arms- 9 arel die-pressed from sheet steel sofas to provide upon one side thereof a plurality' of radially disposed projections l2, inthe present instance four in number Aand arranged at 90O apart. The sides -ofethese'fprojectionsf `form substantially plane faces which-'slope -downwardly to meet the Aopposite faces of.

laterited July 1913. Application filed June 23, 1910. Serial No. 566,437. l

vent-ion Amay be more readily understood, it t,

thereon, the sides of whichA areJof equal K length and singularity, these, projections if ously descended below that normal. 'Consel accomplished in about equaljperiodsof time the upward throw is felt` vby.occupants ofthe It Ais accordinglylhere prollof the vehicle frame l, upon'whfich-is mountt'he depression upon one side thereof is twice 4interfit.- While it is not necessary to the the plates Sv apart. During this movementv the next adjacent projections, thereby forniiiig between the said projections corresponding depressions 13. Each' projection' 'is foi-ined with one of its faces 14 of a circli'un.- ferential length equal to twice the circumferential length of the other side 15 thereof, or in other words, the angle formed between the crest of a projection and the bottom of as great as the angle formed between the said crestand-the bottom of the depression upon its other side. As a result'the construction provides a plurality of alternating, relatively long inclined planes having disposed therebetween a plurality of relatively short inclined planes. This is clearly shown in diagrammatic form in Fig. 7. These plates 8.are so formed that where there is a projection on one side thereof, there occurs a corresponding depression upon the opposite side, and they are provided at their centers with perforations 16, through which passes a bolt 17. -The said members 7 in their normal positions have their extensions 9 set at an angle of 60 to one another, in which position the depressions and projections upon their adjacent sides respectively successful operation of the device, it is advantageous to interpose between the said plates another similarly formed disk or plate 18,-composed of brass or like metal, which may be rivetedor otherwise secured to one of the plates 8. 'Withthe partsl in their normal position as shown in Fig. 2, the respective cam surfaces intermesh` and are heldin such position by means of aresilient member 19, disposed' in contact with the exterior surface of one of the plates 8, said resilientvmember being held in position by means of a nut 20 and washers 21 provided upon the bolt 17. This resilient member is preferably composed of rubber but may be of any suitable material or in any .form desired, so long as it exerts sinticient pressureupon the said cani members.

Having described the present embodiment of this invention the action thereof, which is to a large extent obvious, follows: Assuming the parts to be in the position indicatedin the drawings and that the axle 4 is thrown upwardly as by reason of passing over an obstruction in the road,the bar 1 and body 2 are correspondingly lifted through the spring gear and if the upward thrust is suddenand violent, there is a tendency of the body to boundf'or'oscillate with respect to the axle to a disagreeabledegree. As' the body and axle more toward one`a-nother however, one of the arms 9 is swung about the bolt 17 and the eain orinclined of language, might be meeting surfaces of the projections 12, force 5 the projections of the respective plates move I toward eachl other alongv the long4 inclined L whereupon a relatively rapid retarding action is effected and the upward movement of the car body is stopped, without undue and disagreeable jolting of the occupants thereof.

It will accordingly besee'n from the foregoing that this invention iS one well adapt- 'l ed to accomplish all of the ends and objects hereinbefore set forth, in a practical and efficient manner; that the parts are readilyl interchangeable and of simple and lcheap construction. It will be obvious that very little friction occurs between the steel and brass surfaces, so that wearing of these parts is reduced to a minimum.

As many changes could be made in the above construction and many apparently widely different embodiments of this invention could be made without departing from the scope thereof, it is intended that all matter contained in theabove description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense. It is'also to b e understood that the language used in the follow'- ing claims'is intended to cover all of the generic and specific. features of the invention herein described, and all statements of the scope of the invention which, as a matter said to fall therebetween. l 1 A 4Having described my invention, what I claim as new and desire lto Lsecureby Letters Patent is:

1. In a device of thefna'ture disclosed, the

combination with a vehicle body, a vehicle axle, and a spring interposed between said axle and said'body, of a'` pairof centrally" vpivoted disks, 'said disks having on*u their adjacent surfaces a plurality of radial sector-shaped projections formed with substan-A tially plan'e sides, each of` said lprojections being formed with alongside and a short side,- said long and short lsides of each projection being positioned so that the long side of one projection will meet the short side ofthe adjacent projection to form a depression between eaclipair ofprojections, 4ofA the same size and shape as the projections,

resilient means mountedfon thepivotof the f disks to hold the .disks with their projections mea'risi interineshing with each other, an for mounting said disks so that uponmovenece'fee Y will travel againsteach other on their short.

sides. A

, 2, 'In a. device of the nature disclosed, the combination with a vehicle body, :i vehicle axle, and vsi spring tli'erebetween, of a pair cf diskshped members havingnieens connect ing them' with the axle and body respectively, a piurality of radially dispCsed Sector shaped projections on the adjacent. surfaces of seifl members, eacn projection being formed by two plane surfaces of different size iispcsed at dierent angles to the plane ci tbe member on which it is mounted, each projection en iler. menne-er being zmleped te i elle Hem-essicn 'orznei' vbei.Ween two projections on the other member, a pivot pass4 ing hrough ,sani members ei'iapted to permit. then-1 i0 turn 'relesiivelyl to each other, and resilient means associated `with said pivot ad pted. to urge said members into Contact7 the position 'and arrangement jof said parts being such es t0 cause great-er resistance when the axle and body movein one direction than when opposife direction.

In testimony whereof I affix my signature,

in the presence of two. witnesses.

moving in the JOHN M. LANSDEN, ce f Tl/Vitnesses ,z

Lewis B. BROWN Func' P. Minnen. 

